1) quasi-static bending of poroelastic beam
多孔弹性梁的拟静态弯曲
2) poroelastic beam
多孔弹性梁
1.
Nonlinear governing equations were established for large deflection of incompressible fluid saturated poroelastic beams under constraint that diffusion of the pore fluid is only in the axial direction of the deformed beams.
在孔隙流体仅存在沿梁轴线方向扩散的假定下,建立了微观不可压饱和多孔弹性梁大挠度问题的非线性数学模型。
2.
Based on the theory of porous media and the hypothesis of large deflection of slender beams,one dimensional nonlinear mathematical model was presented for quasi-static large deflection of incompressible fluid saturated poroelastic beams under constraint that the axis line of poroelastic beam doesn t elongate and the diffusion of pore fluid is only in the axial direction of the deformed beams.
基于饱和多孔介质理论和弹性梁的大挠度弯曲假设,在多孔弹性梁轴线不可伸长,孔隙流体仅沿轴向方向扩散的限制下,建立了微观不可压饱和多孔弹性梁大挠度拟静态响应的一维非线性数学模型。
3.
Based on the theory of porous media and under the condition of infinitesimal deflection,the governing differential equations for an incompressible saturated poroelastic beam were presented.
在杆件弯曲小变形的假定下,考虑杆件的侧向变形因素,根据多孔介质理论,本文首先建立了不可压饱和多孔弹性梁弯曲变形时动力响应的控制方程。
4) static bend
静态弯曲
1.
The strength of the bus was compared between an emergency braking and static bend in order to analyze distributional feature of stre.
紧急制动是客车常见的工况,利用有限元分析方法,对双层客车在紧急制动和静态弯曲工况下的车身骨架强度进行了详尽的分析比较,为了确定客车应力分布情况,同时得出了制动载荷对车体强度的影响因素。
5) saturated poroelastic beam
饱和多孔弹性梁
1.
Based on the mathematical model for large deflection of saturated poroelastic beam,the dynamical behavior of simply supported saturated poroelastic beam with two permeable ends,subjected to a suddenly applied transversal constant load or a harmonic load,was investigated with Galerkin truncation method.
基于饱和多孔弹性梁大挠度变形的数学模型,利用Galerkin截断法,本文研究了两端可渗透的简支饱和多孔弹性梁分别在突加横向均布常载荷和简谐载荷作用下的动力响应,得到了梁弯曲时挠度、弯矩以及孔隙流体压力等效力偶等随时间的响应,考察了不同载荷下多孔弹性梁弯曲的响应特征。
6) quasi-static and dynamic bending responses
拟静态和动力弯曲响应
补充资料:弯曲工艺的概念及弯曲件
1.弯曲工艺:是根据零件形状的需要,通过模具和压力机把毛坯弯成一定角度,一定形状工件的冲压工艺方法。
2.弯曲成形工艺在工业生产中的应用:应用相当广泛,如汽车上很多履盖件,小汽车的柜架构件,摩托车上把柄,脚支架,单车上的支架构件,把柄,小的如门扣,夹子(铁夹)等。
弯曲的基本原理:以V形板料弯曲件的弯曲变形为例进行说明。其过程为:
1. 凸模运动接触板料(毛坯)由于凸,凹模不同的接触点力作用而产生弯矩, 在弯矩作用下发生弹性变形,产生弯曲。
2. 随着凸模继续下行,毛坯与凹模表面逐渐靠近接触,使弯曲半径及弯曲力臂均随之减少,毛坯与凹模接触点由凹模两肩移到凹模两斜面上。(塑变开始阶段)。
3.随着凸模的继续下行,毛坯两端接触凸模斜面开始弯曲。(回弯曲阶段)。
4.压平阶段,随着凸凹模间的间隙不断变小,板料在凸凹模间被压平。
5. 校正阶段,当行程终了,对板料进行校正,使其圆角直边与凸模全部贴合而成所需的形状。
弯曲变形的特点: 弯曲变形的特点是:板料在弯曲变形区内的曲率发生变化,即
弯 曲半径发生变化。从弯曲断面可划分为三个区:拉伸区、压缩区和中性层。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条